Helps unblock your nose for up to 8 hours. Vicks Sinex Micromist is a medicine for the relief of nasal congestion. Contains oxymetazoline. Always read the leaflet.Medicinal product. For relief of Common Cold, Hayfever, Sinusitis with blocked noses. Active ingredients, Oxymetazoline HCI 0.05 w/v. Please read enclosed leaflet carefully before use. Do not give to children under 12 years old. Store out of reach and sight of children.